Simpson Ross revealed their first daughter by posting a super-sweet family portrait on her Instagram. Next to a photo of all of them in white — Simpson Ross wearing a lace long-sleeve number and Ross rocking a white shirt, while Jagger Snow is dressed in a frothy tutu (can you saw aww) — Simpson Ross wrote: "Jagger Snow Ross !! We love her so much!!! She is beyond everything!!! I have the best baby daddy @realevanross In the world. Love you." Too sweet!

Unsurprisingly, Ross, who loves to declare his affection for wife Ashlee across social media, also posted the heart-warming photo. Next to the portrait, he wrote: "Jagger Snow Ross ! Everyone!!!!! Everyday has been the best day!!! such a wonderful blessing. Love you @ashleesimpsonross best mommy in the world!"

The two announced her birth on their Instagram accounts, so we aren't too surprised this is the medium they chose to introduce their little girl to the world. Just before her birth, Ross was busy posting never-before-seen photos from their exclusive wedding at mom Diana Ross' Greenwich, Connecticut estate, writing loving words for his one true love and expressing excitement over his growing family. He's also declared his love for stepson Bronx, whom Simpson had with first husband Pete Wentz.

This little family looks as happy as can be! Congrats to the happy couple on their beautiful baby girl!